Blue Around Iris

[Ghani]

This is not my cat, but we cat sit for him. Please excuse my lack of correct designations. Humans have white around their iris, I’m not certain if cats have the same “white.” The cat is male ~ 16yo. This cat has blue rings around the “iris” the cat’s iris appears normal but is ringed by a blue circle.
We have had many cats, all long lived, but never observed this in our cats. Is this a genetic anomaly?
GhaniJ

 

[LTS3]

Is this a Siamese cat? Siamese cats, and maybe a few other breeds, have blue eyes :

(photo below taken off Google Images. It is not my cat)

 

[Ghani]

What beautiful eyes your cat has!

Our guy is an older cat, but the blue is not as pronounced. He has a little Siamese so perhaps this is the blue we see.
GhaniJ

 

[LTS3]

Your cat's eyes are completely normal

 

[Ghani]

Thank you so much. We’ve never had a Siamese and were unaware of this trait. We love him bunches.
He’s a grand old man, we would “cat nap” him from my son if we could but he loves my son a lot too. This kitty has traveled the world - oh the stories he could tell.
kj